Тенденции развития науки и образования -29 -Исходя из полученных данных, можно сделать вывод, что управление подачей жидкости с помощью преобразователя частоты наиболее эффективно. Для обеспечения устойчивой работы электродвигателя, ограничения его перегрузки по току и магнитному потоку, поддержания высоких энергетических показателей в частотном преобразователе поддерживается определенное соотношение между его входными и выходными параметрами, зависящее от вида механической характеристики насоса.

The article discusses a variant of the implementation of a starter-generator based on a differential planetary gear, in which a flywheel is integrated. The method of its control and the algorithm of operation as a starter-generator are described. The main task in this article is to develop a flywheel and optimize its weight and size parameters, taking into account the requirements for the design of starting equipment for the MTZ-80 tractor. The technical parameters of the D-240 diesel engine and the viscosity-temperature characteristic of the M-8Gz engine oil are given. The calculation of the kinetic energy that must be accumulated in the flywheel to start an internal combustion engine in severe climatic conditions is carried out. The weight and size parameters of the flywheel have been calculated. A mathematical model of a starter with a flywheel is built for showing the processes of starting an internal combustion engine in various conditions and allowing to assess the adequacy of mathematical calculations and conduct a comparative analysis.

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This article discusses methods of regulating the water supply at the pump station of the first rise. The description of pump unit is drawn. Equipment characteristics of engine parameters and daily fluid intake of station are given. Modernization reasons are described. Functional diagrams of the three control methods and their brief descriptions are given, as well as the calculations of these methods. The optimal method for regulating the feed was selected, based on the studies. Mathematical model is given for chosen regulation method. Obtained resulted of mathematical modeling are presented on the graphs.

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